When generating Ext SDK, we need to have the ability to configure to exclude some layers. This is useful when those layers are just download layers which contain tarball. // Qi
commit 090fb5146f2e647843620660b98ba1773a2e341c Author: Chen Qi <Qi.Chen@windriver.com> Date: Wed Feb 3 15:50:21 2016 +0800 copy_buildsystem: add ability to exclude layers In some cases, we may have some kind of download layers in BBLAYERS, so that we can set BB_NO_NETWORK to "1". This results in extremely large extensible SDK. And we actually don't need these download layers in the SDK. Add a new variable, SDK_LAYERS_EXCLUDE, to enable users to explicitly exclude some layers when generating the extensible SDK. [YOCTO #8878] (From OE-Core rev: acf1148bf3f4e489e9e2b0b8745753e1311ee812) Signed-off-by: Chen Qi <Qi.Chen@windriver.com> Signed-off-by: Ross Burton <ross.burton@intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>